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What is involved in redox reactions
A.the transfer of electrons between reactants
B.the bonding of ions to form chemical compounds
C.the addition of water to break down food macromolecules
D.the breaking down of water into hydrogen and oxygen atoms
Answers
Answer:
A
Explanation:
Redox reactions are comprised of two parts, a reduced half and an oxidized half, that always occur together. The reduced half gains electrons and the oxidation number decreases, while the oxidized half loses electrons and the oxidation number increases.
Answer:
a
Explanation:
Related Questions
Consider the reaction: K2S(aq)+Co(NO3)2(aq)=2KNO3(aq)+CoS(s) what volume of 0.255 M K2S solution is required to completely react with 160 mL of 0.130 M Co(NO3)2?
How many molecules is .360 mol of water
Magnesium and iron are metallic elements. How does a mole of magnesium compare with a mole of iron?a) A mole of iron has more atoms. b) They both have the same mass. c) A mole of magnesium has more mass. d) They both have the same number of atoms.
Which of the following is a synthesis reaction?C2H4 + 3O2 yields 2CO2 + 2 H2O 2HCl yields H2 + Cl2 2K + 2HCl yields 2KCl + H2 SO3 + H2O yields H2SO4
Answers
Explanation:
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Answers
Answer:
The theoretical yield of copper is 79.6281 g
Explanation:
Moles of copper sulfate =
According to reaction 1 mol of copper sulfate gives 1 mol of copper .
Then 1.2530 mol of copper sulfate will gives :
of copper .
Mass of 1.2530 mol of copper :
1.2530 mol × 63.55 g/mol = 79.6281 g
The theoretical yield of copper is 79.6281 g
b. silicon
c. aluminum
d. phosphorus. Why?
Answers
Atoms dont "lose" or "gain" protons, if they did, they'd be completely different elements. So basically, anything with 13 protons is a form of Aluminum.
2. The boiling point of a liquid will increase with increasing atmospheric pressure.
3. The boiling point of a liquid will decrease with decreasing atmospheric pressure.
4. Liquids have no definite volume.
Answers
Answer:
4
Explanation:
1 is correct
Liquids have no definite shape as they take up the shape of the container. Thus, we can say a liquid has no shape of its own but rather has the shape of the container in which it is filled.
2 is correct
When the atmospheric temperature is increased, it also will increase the boiling point of the liquid
3 is correct
This is an extension of the statement 2. While we decrease the atmospheric pressure, we are also decreasing the boiling point
4 is incorrect
A liquid have a definite volume. When we say a volume is definite, it means the volume is fixed and does not change. The volume of liquids is definite for a particular mass of the liquid and does not change
Final answer:
The statement 'Liquids have no definite volume' is not true. Liquids do have a definite volume, but no definite shape. The boiling point of a liquid changes with atmospheric pressure.
Explanation:
The statement ' Liquids have no definite volume' is NOT a true statement about liquids. In fact, while they do not have a definite shape and take on the shape of their container, liquids do have a definite volume under given conditions.
Statements 2 and 3 accurately describe that the boiling point of a liquid varies with changes in atmospheric pressure. Specifically, the boiling point increases with increasing atmospheric pressure, and conversely decreases with decreasing atmospheric pressure.
Learn more about Properties of Liquids
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b. NH4S
Answers
The separation of ammonium sulfide has been possible with filter paper.
Thus, option B is correct.
The dissolution or solubility of the compound has been used for the determination of the sample actions.
The compounds that are soluble has been not be visible independently. The undissolved solute in the sample has been clearly visible discreet in the solution, resulting in the separation by physical means.
Separation through filter paper
Filter paper has been the small pore size material that has been used for the physical separation of the compounds in heterozygous solution.
The solution of NaCl and water has been pure solution, and thus the separation of NaCl has not been possible with the filter paper.
The solution of ammonium sulfide and water has been a heterozygous solution, as ammonium sulfide precipitate out in the solution. Thus, the separation of ammonium sulfide has been possible with filter paper.
Thus, option B is correct.
For more information about, filter paper, refer to the link:
The compound when stirred in water will not pass through filter paper is NH4S. The answer is letter B. This is because it is a precipitate that resulted from the reaction of an acid or a base. NaCl will pass through the filter paper because it is soluble in water.
Answers
Noble gas configuration for Li : [He]2s¹
Further explanation
In an atom, there are levels of energy in the shell and sub-shell
This energy level is expressed in the form of electron configurations.
Lithium with atomic number 3, then the electron configuration:
1s²2s¹
And for noble gas configuration or it can be called Condensed electron configurations :
[He]2s¹
Answer:
[He]2s¹
Explanation: